I have attached … / Attached is … / Please find attached … / Attached herewith … / Enclosed …
UsageAll of these can be grammatical. For routine email, I have attached or Attached is is usually the clearest. Please find attached is formal; attached herewith is more legalistic; enclosed traditionally suits physical correspondence.
I have attached … / Attached is …
Use when
You want plain, direct wording for an email attachment.
Example
“I have attached the completed form.”
Please find attached …
Use when
You use an established but formal and formulaic email construction.
Example
“Please find attached the signed agreement.”
Attached herewith …
Use when
You intentionally use a legalistic or highly formal construction meaning sent together with this correspondence.
Example
“Attached herewith is the executed deed.”
Enclosed …
Use when
You refer to material included with a letter or other correspondence; in ordinary email, attached is usually clearer.
Example
“Enclosed is the signed original for your records.”
Quick check
please find attached herewith, attached herewith in routine email, enclosed when an electronic attachment is meant and clarity suffers
Usage note